from the white house not long after the vote, one of the most powerful and angry speeches that barack obama has ever given as president of the united states. newtown families and tucson survivors standing with the president at the white house when he made those remarks. many of them today were looking on in the senate as the background checks bill was filibustered. there's a lot to explain what happened there in that story and what happens next. this is, clearly, the biggest policy story in this president's second term thus far, by far it is. but also in the midst of all of this, still today, the country is riveted to the continuing news out of boston after the bombing of the boston marathon two days ago. the first thing you need to know what happened today in the news about boston is some of what you may have heard today out of boston was flat-out wrong. >> again, i have a boston source, fran townsend has a second source, in fact, an arrest has been made on wednesday. here's what fran's source said, an arrest has been made based on two different videos showing images of the suspect. i was